Results 1 to 10 of about 219 (86)

Molecular identification of Rickettsia parkeri infecting Amblyomma triste ticks in an area of Argentina where cases of rickettsiosis were diagnosed [PDF]

Memorias Do Instituto Oswaldo Cruz, 2013
Specimens of the hard tick Amblyomma triste were found infected with Rickettsia parkeri in an area of Argentina (General Lavalle, Buenos Aires Province) where cases of human illness attributed to this microorganism have been reported. Molecular detection
Gabriel L Cicuttin, , Nava Santiago
exaly   +6 more sources

The sialotranscriptome of Amblyomma triste, Amblyomma parvum and Amblyomma cajennense ticks, uncovered by 454-based RNA-seq [PDF]

Parasites and Vectors, 2014
Background Tick salivary constituents antagonize inflammatory, immune and hemostatic host responses, favoring tick blood feeding and the establishment of tick-borne pathogens in hosts during hematophagy. Amblyomma triste, A. cajennense and A.
Luiz Gustavo Gardinassi, JOSÉ M C Ribeiro, BEATRIZ R Ferreira   +2 more
exaly   +3 more sources

Molecular detection of Ehrlichia chaffeensis in marsh deer (Blastocerus dichotomus) and their parasitic Amblyomma triste ticks in Argentina suggests a local transmission cycle [PDF]

Parasites and Vectors
Background Since the first finding of Ehrlichia chaffeensis in the Argentinian marsh deer populations in 2018, we have conducted ongoing surveillance efforts to better understand the ecological and epidemiological dynamics of this zoonotic tick-borne ...
Marisa Diana Farber
exaly   +3 more sources

Rickettsial Infection in Ticks from a National Park in the Cerrado Biome, Midwestern Brazil [PDF]

Pathogens, 2023
This study was carried out from February 2020 to September 2021 in Parque Nacional das Emas (PNE), a national park located in the Cerrado biome, midwestern Brazil, as well as in surrounding rural properties.
Raquel Loren dos Reis Paludo, Warley Vieira de Freitas Paula, Lucianne Cardoso Neves, Luiza Gabriella Ferreira de Paula, Nicolas Jalowitzki de Lima, Bianca Barbara Fonseca da Silva, Brenda Gomes Pereira, Gracielle Teles Pádua, Filipe Dantas-Torres, Marcelo B. Labruna, Thiago Fernandes Martins, Jonas Sponchiado, Lucas Christian de Sousa-Paula, Wellington Hannibal, Felipe da Silva Krawczak   +14 more
doaj   +2 more sources

Diversity of rickettsiae in ticks (Acari: Ixodidae) collected from wild vertebrates in part of the Amazon, Cerrado, and Pantanal biomes in Brazil [PDF]

Revista Brasileira de Parasitologia Veterinária, 2023
Ticks parasitizing 102 wild animals in the states of Mato Grosso and Goiás, Brazil were collected between 2015 and 2018. A total of 2338 ticks (865 males, 541 females, 823 nymphs, and 109 larvae) belonging to four genera (Amblyomma, Dermacentor ...
Anny Carolina Prati, Maerle Oliveira Maia, Thiago Fernandes Martins, Thaís Oliveira Morgado, Sandra Helena Ramiro Corrêa, Edson Junior Figueiredo Mendes, Rosa Helena dos Santos Ferraz, Jessica Rhaiza Mudrek, Christine Strüssmann, Dirceu Guilherme de Souza Ramos, Thiago Borges Fernandes Semedo, Make Kawatake Minetto, Daniel Moura de Aguiar, Richard Campos Pacheco, Andréia Lima Tomé Melo   +14 more
doaj   +2 more sources

Comparative evaluation of infected and noninfected Amblyomma triste ticks with Rickettsia parkeri, the agent of an emerging rickettsiosis in the New World. [PDF]

Biomed Res Int, 2013
The distribution of Rickettsia parkeri in South America has been associated with Amblyomma triste ticks. The present study evaluated under laboratory conditions two colonies of A. triste: one started from engorged females that were naturally infected by R. parkeri (designated as infected group); the other started from noninfected females (designated as
Nieri-Bastos FA, Szabó MP, Pacheco RC, Soares JF, Soares HS, Moraes-Filho J, Dias RA, Labruna MB.   +7 more
europepmc   +2 more sources

Rickettsia parkeri in Amblyomma triste from Uruguay [PDF]

Emerging Infectious Diseases, 2004
Our goal was to detect whether spotted fever group Rickettsia are found in the suspected vector of rickettsioses, Amblyomma triste, in Uruguay. Rickettsia parkeri was detected in A.
José M. Venzal, Aránzazu Portillo, Agustín Estrada-Peña, Oscar Castro, Perla A. Cabrera, José A. Oteo   +5 more
doaj   +2 more sources

Automated identification of spotted-fever tick vectors using convolutional neural networks. [PDF]

Med Vet Entomol
We evaluate the performance of convolutional neural networks (CNN) AlexNet, ResNet‐50 and MobileNetV2 for the automated identification of tick species capable of transmitting spotted fever. CNNs achieved accuracy rates of ~90% in identifying ticks and showed sensitivities of 59%–100% according to species, sex, position or image resolution.
Gomes IRC, Miranda VL, Leal JFC, Oliveira IP, Silva PJ, Bitencourth K, Rodrigues CM, Siqueira LR, Labruna MB, Gazeta GS, Amorim M, Gurgel-Gonçalves R.   +11 more
europepmc   +2 more sources

Ticks on wild vertebrates necropsied in a veterinary pathology service in central Brazil: species richness and pathogen screening [PDF]

Revista Brasileira de Parasitologia Veterinária
During 2022-2024, fresh carcasses of 35 wild animals from Goiás state and the Federal District, both in central Brazil, were sent to the veterinary pathology service of the University of Brasília.
Igor Silva Silito, Matheus Pasini-Martins, Isabella Pereira Pesenato, Marcelo Bahia Labruna, Márcio Botelho de Castro, Liz de Albuquerque Cerqueira, Thiago Fernandes Martins   +6 more
doaj   +3 more sources

Extension of the distribution of Amblyomma triste Koch, 1844: Morphological and molecular confirmation of Morphotype I in Colombia [PDF]

Ticks and Tick-borne Diseases, 2022
Paula A Ossa-López, Laura Natalia Robayo-Sánchez, Juan E Uribe   +2 more
exaly   +2 more sources